Abie jan schipper



A. I. SCHIPPER.

HOISTING MACHINE- APPLICATION FILED JUNE 1, 191B.

1 3 1 7, 322 Patented Sept. 30,1919.

wwmm ARIE JAN SCHIPPEBI, OF ALKMAAR, NETHERLANDS.

Hummer-MACHINE.

To all whom it may concern:

Be it known that I, ARIE JAN SCI-UPPER, subject of the Queen of the Netherlands, residing at Alkmaar, Kingdom of the Netherlands, have inventedcertain new and useful Improvements in Hoisting-Machines, of which the following is a specification.

In gins which operate with friction cones there is, as is well known, the disadvantage that in consequence of the friction of the elements there occurs a disadvantageous evolution of heat. This evolution of heat frequently increases to such an extent that after a certain time, for example after several hours, the gin has, in consequence of its parts running hot, to be put out of operation until it has cooled down.

The means generally employed, of allow ing the parts exposed to excessive friction and heat evolution to run in an oil bath in order to lessen the friction coefficient, have not, so far as I am aware, yet been employed in gins for the reason that the'friction surface would have to be increased in proportion to the reduction of the friction coefficient. Consequently very large dimensions as regards the size of the friction cone would thus be necessary.

The present inventionseeks to overcome these known disadvantages by dispensing with the employment of friction cones for the purpose. I

The characteristic features of the present invention reside in the fact that the fric-- tional action on the winding drum necessary for the operation of the gin is effected by means of a lamellar clutch, and in order to lessen the heat which arises, the winding drum is constructed in such a manner that it constitutes besides a housing for the lamellar clutch, an oil bath in which the same is immersed.

The employment of lamellar clutches is in itself known, but their employment in gins as a substitute for the friction cones,so far as I am aware, has not heretofore been adopted.

The technical improvements which are attained by the foregoing arrangement may be summarized as follows:

(1) that a gin of relatively small dimen sions is suflicient to raise comparatively heavy loads;

(2) that such a gin may be kept in opera tion the whole day without showing any re- Specification of Letters Patent.

Patented Sept. so, 1919.

Application filed June 1, 1918. Serial No. 237,838.

markable heating, and therefore without it being necessary to put it out of operation.

In the accompanying, drawing is illustrated, in vertical section and by way of example, a gin constructed in accordance with the present invention, in which 1 is the driving shaft and 3 is the stationary shaft. 2 is the winding drum which is mounted in a slidable manner on the two shafts l and 3 sothat it can be moved backward and forward longitudinally in either direction by means of the lever 4, which is pivoted near its middle at 15, the upper part of the lever being broken away, as not needing illustration. 5 is a ring secured to the driving shaft 1, and on this ring rest the lower lamellar plates 6 of the lamellar clutch an arranged on the driving axle, and on the rotation of the ring 5 they are carried around therewithr 7 indicate those lamellar or plate elements of the lamellar clutch a which are secured to the inner surface of the winding drum 2 and which on the rotation of the winding drum are carried around therewith. The lower lamellae 6 and the upper lamellae 7 are arranged opposite one another alternately in the known manner in order that they may be able to follow, in the interior of the space formed by the ring 5 and the winding drum 2, the movement of the winding drum to right or left when the latter executes its movement in either direction. On the fixed shaft 3 is likewise mounted a ring 8 which for its partserves to carry the lower parts 9 of a second lamellar clutch b which are arranged opposite the upper. lamellae 10 of the lamellar clutch b, and which upper lamellae 10 likewise are attached to the inner surface ofthewinding drum 2. The lamellae 9 and 10 of the second clutch Z) are, in the same way as the lamellae 6 and 7 of the other clutch a, eapable of being slid to right or left in the direction of movement of thewinding drum 2 and likewise follow the movement of the latter.

The system therefore works simultaneously with two lamellar clutches a and b which are arranged symmetrically in the interior of the winding housing.

The winding drum is provided on each of its opposite sides with lips or thrust rings 11 and 12 facing toward the interior of the drum, which lips follow the backward and forward movement of the winding drum produced by the lever 43 In either of the two end positions of the winding drum 2 the lips or rings 11 and 12 act on the respective clutches. In the extreme left-hand position of the winding drum the lip or ring 11 presses on the lamellar clutch a, presses the lamellae together, and causes the Winding drum to be carried around by the rotating shaft 1. At the extreme right-handposition of the Winding drum 2 the lip or ring 12 engages with the clutch b, presses it together and causes the winding drum to be clutched to the stationary shaft 3.

Inthe event of the winding drum being clutched to the rotating shaft 1, the whole gin is set in rotation and the load can be subjected to the raising or lowering action. In the other event, when the winding drum is connected with the stationary shaft 3, the gin is out of action in spite of the continued. rotary motion of the driving shaft 1.

In the central position of the system, that is to say when neither of the lips or rings 11 and 12 engage with either of the two clutches a and b, the winding drum is able to rotate loosely for the purpose of the possible reversal of the system, .in order for example to bring the load from the raising.

to the lowering position.

Thespace 13 formed on the one side by the winding drum 2 and the rings 5, 5, and on e the other side by the housing 2 and the rings 8, 8 serves-for the reception of the oil bath for the lamellar clutch. space which the rings 5 and 8 form one with the other.

Having now particularly described and ascertained the nature of my said invention, and in what manner the same is to be performed, I declare that whatI claim is:

1. In hoisting mechanism, in combination with a-pair of shafts arranged in alinement, a drum movable endwise over said shafts and shifta-ble for clutching and braking engagement, outwardly extending-parallel lamellze arranged at intervals in two series carried respectively by the proximate ends of said shafts, two series of lamellae arranged in the inner face of said drum to alternate with the lamellae .of the rings, and meanscarried by said drum forforcing one or the other of these series of lamellae carecpas (i this. Pa e m y be ebte n d o 14 indicates a dead r ed by hedram in e Qeeiati e ee eet With the proximate series of lamellae' carried by the shafts.

2. In hoisting mechanism, in combination with a pair of shafts arranged in alinement, .a; drum movable endwise over said shafts,

in e h di eetie eve -the nd ef. s d.

ha s and on tructed erlee in al peeien t rm na v pae be ween saiddr m a least one o aid rin s, nd a hai o ut he W thin a s ldrum, eeeheei e et ng of two series otleme lae conne ing Said drum espectively W th- 1.16 of .saidsha o t e other in the ex remeeudwi se p sit ns of said drumn ho st ng mechan m, in eem ii at n ith a p i f shat-ts e zeag dei .e inem t, a drum m va e ndwise ev r a hafts, ring on th p e imete nds o said ft o wa d y .extentlipgp ra lel lemel ee ranged .on sa d r ngsinser eee intel w ries of lamell eerrenged en; heater face of said drum eelte te with the.

' e arriedbysa ellae of the rings and drum f r ;:f reing en o1-.tl.le.;. her of these eri emelle earned by th d um into operative "contact with the proximate series of la e lee on, one-0 he lilies, v149 ?(ling o th zdir tien of .e dw emevement (if s d.

rum, he la er beinginn tru te to ellew oi space betwe n ebeut the eine lee I 1 test mony Whe eef have. a fixed my iguatur in preseaeeeftwowitnesses ,ABLEJAN @QI-IllPEE- Wi nes es;

1 Karma M. AHARADO.

five eent e ,-by.eddre ies the a am aianer -9 "liti a e; Wa h ngt n, D- 113 

